Mo Li didn't care about the mock exam for IMO. This was a competition for high school students, she was already beyond that.
Speaking of which, before she entered research school, her math had always been good. As mentioned earlier, Mo Li was good with all the sciences. It was why her math teacher favored her deeply and often gave her special lessons.
The goal of her teacher was to unlock the potential within Mo Li and also to steer her towards a life of research in the mathematics. It was why whenever Mo Li saw a thick stack of mathematical problems, she would involuntarily frown. In the end, the other teachers had to intervene for Mo Li's math teacher to slow his roll.
